Continuity mistake: When the nanny is walking in the desert, she falls down. However, when she is on the ground, she is wearing shoes completely different than the ones she had been wearing the shot before.
Continuity mistake: When the father is trying to wrestle the rifle away from the son, the shot changes to the police running around frantically. If you look in the background you can see the the boy firing the rifle without the father. The shot changes again to the father wrestling with the boy for the gun.
Answer: The scenes are out of chronological order - Richard called Rachel, Susan's sister, to tell her Susan has been shot. He calls Amelia, the nanny, who already knows about the shooting from Rachel, and tells her that Rachel will find someone to mind the kids. He rings later and tells her to cancel the wedding as they are still in Morocco and Rachel could not find a replacement. All this takes place before she takes the kids to Mexico and is deported.
Sierra1 ★
So did Amelia go Mexico or was that just a dream, because Brad never finds out about that and the kids missing along with Amelia?
Everything happens, but in different times. When you see Brad Pitt on the phone, that is the phone call the nanny was receiving in the beginning of the movie, before she got ready for the wedding.